JPH11150415A - Multiple frequency antenna - Google Patents
Multiple frequency antennaInfo
- Publication number
- JPH11150415A JPH11150415A JP9314151A JP31415197A JPH11150415A JP H11150415 A JPH11150415 A JP H11150415A JP 9314151 A JP9314151 A JP 9314151A JP 31415197 A JP31415197 A JP 31415197A JP H11150415 A JPH11150415 A JP H11150415A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- frequency
- inverted
- conductor
- radiation conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として携帯電話
などの小型、薄型の無線端末の内蔵アンテナとして利用
されている逆Ｆアンテナを、２つ以上のシステムに適用
できるようにした多周波アンテナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-frequency antenna in which an inverted-F antenna mainly used as a built-in antenna of a small and thin wireless terminal such as a portable telephone can be applied to two or more systems. .
【０００２】[0002]
【従来の技術】逆Ｆアンテナは、携帯電話に代表される
小型、薄型の無線端末の内蔵アンテナとして、優れた特
性を有している。この逆Ｆアンテナを用いて、２つ以上
のシステムに適用できるように、異なる周波数帯域を共
に送受信可能な多周波アンテナを構成しようとする場
合、図２３及び図２４に示すような構成が知られてい
る。2. Description of the Related Art An inverted-F antenna has excellent characteristics as a built-in antenna of a small and thin wireless terminal represented by a portable telephone. When an inverted F antenna is used to configure a multi-frequency antenna capable of transmitting and receiving different frequency bands together so that it can be applied to two or more systems, configurations shown in FIGS. 23 and 24 are known. ing.
【０００３】図２３に示した構成は、それぞれ異なった
共振周波数を有する逆Ｆアンテナ２３２、２３３を共平
面２３１上に隣接して構成した例である。この構成の場
合、２つの逆Ｆアンテナ２３２、２３３を実装する面積
が大きくなるという問題がある。The configuration shown in FIG. 23 is an example in which inverted F antennas 232 and 233 having different resonance frequencies are adjacently arranged on a coplanar surface 231. In the case of this configuration, there is a problem that an area for mounting the two inverted F antennas 232 and 233 increases.
【０００４】また、図２４に示した構成は、それぞれ異
なった共振周波数を有する逆Ｆアンテナ２４２、２４３
を共平面２４１上に上下に積み重ねて構成した例である
が、この構成の場合、２つの逆Ｆアンテナ２４２、２４
３を実装する部分の高さ、体積が大きくなるという問題
がある。Further, the configuration shown in FIG. 24 has inverted F antennas 242 and 243 having different resonance frequencies.
Are stacked vertically on a coplanar surface 241. In this configuration, two inverted F antennas 242 and 24
There is a problem that the height and the volume of the part on which the mounting 3 is mounted increase.
【０００５】このように、従来の多周波逆Ｆアンテナの
構成では、実装面積、実装体積が大きくなるといった問
題があり、無線端末の軽薄短小化を妨げる要因となって
いる。As described above, the configuration of the conventional multi-frequency inverted F antenna has a problem that the mounting area and the mounting volume are large, which is a factor that hinders the reduction in size and size of the wireless terminal.
【０００６】[0006]
【発明が解決しようとする課題】このように、従来の多
周波逆Ｆアンテナの構成においては、単周波数の逆Ｆア
ンテナに比べて、実装面積、実装体積が大きくなるとい
った問題点があった。本発明は、上記のような従来技術
の欠点を解決し、単周波数の逆Ｆアンテナに比べて、実
装面積、実装体積の増大を必要としない多周波アンテナ
を提供することを目的とするものである。As described above, the configuration of the conventional multi-frequency inverted F antenna has a problem that the mounting area and the mounting volume are larger than those of the single frequency inverted F antenna. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a multi-frequency antenna that does not require an increase in mounting area and mounting volume as compared with a single-frequency inverted F antenna. is there.
【０００７】[0007]
【課題を解決するための手段】本発明に係る多周波アン
テナは、切欠きを有する逆Ｆアンテナからなる第１のア
ンテナと、この第１のアンテナと異なる周波数で共振す
る第２のアンテナとを具備し、第２のアンテナが、第１
のアンテナの切欠きの内部に配置されることを特徴とす
る。A multi-frequency antenna according to the present invention comprises a first antenna comprising an inverted F antenna having a notch and a second antenna which resonates at a frequency different from that of the first antenna. And the second antenna is the first antenna.
Is arranged inside the notch of the antenna.
【０００８】このような構成とすることにより、一般的
に用いられている単周波逆Ｆアンテナに比べて、実装面
積、実装体積を共に増大することなく、小型且つ薄型の
多周波アンテナを実現することが可能となる。With this configuration, a small and thin multi-frequency antenna can be realized without increasing both the mounting area and the mounting volume as compared with a generally used single-frequency inverted F antenna. It becomes possible.
【０００９】ここで、第２のアンテナが逆Ｆアンテナで
あってもよい。さらに、この第２のアンテナが切欠きを
有するものであってもよい。さらにまた、この第２のア
ンテナの切欠きの内部に、第３のアンテナが配置されて
もよい。[0009] Here, the second antenna may be an inverted F antenna. Further, the second antenna may have a notch. Furthermore, a third antenna may be arranged inside the notch of the second antenna.
【００１０】このように、さらに第３のアンテナを配置
することにより、３つの周波数で共振する小型且つ薄型
の多周波アンテナが実現できる。そして、この第３のア
ンテナが逆Ｆアンテナであってもよい。また、第２のア
ンテナが線状アンテナであってもよい。As described above, by further arranging the third antenna, a small and thin multi-frequency antenna that resonates at three frequencies can be realized. The third antenna may be an inverted F antenna. Further, the second antenna may be a linear antenna.
【００１１】[0011]
【発明の実施の形態】以下、図面を参照して、本発明の
実施形態について詳細に説明する。本発明の実施形態を
説明するにあたって、まず逆Ｆアンテナの共振周波数に
ついて説明する。Embodiments of the present invention will be described below in detail with reference to the drawings. Before describing the embodiment of the present invention, the resonance frequency of the inverted F antenna will be described first.
【００１２】図２５は、逆Ｆアンテナの一般的な構成を
示している。接地された接地導体板２５１上に、放射導
体２５２が設置され、この放射導体２５２は短絡板２５
３によって接地導体板２５１に接続され、給電線２５４
は図示しない送受信回路に接続されている。放射導体２
５２は、図中Ｌ１の長さが約λ／４（λは波長）となる
周波数で共振することが知られている、また、図２６
は、逆Ｆアンテナの小型化の一例を示している。接地さ
れた接地導体板２６１上には、切欠き（スロット）２６
２を有する放射導体２６３が設置され、前記放射導体２
６３は、短絡板２６４によって前記接地導体板２６１に
接続され、また給電線２６５によって図示しない送受信
回路に接続されている。前記放射導体２６３は図中（Ｌ
２＋Ｌ３）の長さが約λ／４（λは波長）となる周波数
で共振する。この切欠き付逆Ｆアンテナは、図２５に示
した一般的な逆Ｆアンテナに比べて、小さい実装面積
で、同じ周波数で共振する逆Ｆアンテナを実現してい
る。FIG. 25 shows a general configuration of an inverted F antenna. A radiation conductor 252 is provided on the grounded conductor plate 251 which is grounded.
3 and connected to the ground conductor plate 251 by the feeder line 254.
Is connected to a transmitting / receiving circuit (not shown). Radiation conductor 2
52 is known to resonate at a frequency at which the length of L1 in the figure is about λ / 4 (λ is a wavelength).
Shows an example of miniaturization of the inverted F antenna. A notch (slot) 26 is formed on the grounded conductor plate 261.
The radiation conductor 263 having the radiation conductor 2 is provided.
63 is connected to the ground conductor plate 261 by a short-circuit plate 264 and to a transmitting / receiving circuit (not shown) by a power supply line 265. The radiation conductor 263 is shown in FIG.
2 + L3) resonates at a frequency at which the length is about λ / 4 (λ is a wavelength). This notched inverted-F antenna realizes an inverted-F antenna that resonates at the same frequency with a smaller mounting area than the general inverted-F antenna shown in FIG.
【００１３】本発明の実施形態に係る多周波アンテナ
は、図２６に示した切欠き付逆Ｆアンテナの切欠き部分
に、切欠き付逆Ｆアンテナと異なる周波数で共振する別
のアンテナ例えば逆Ｆアンテナを配置した構成である。
このように構成することにより、外側の切欠き付逆Ｆア
ンテナはその外周の半分の長さを約λ／４（λは波長）
とする周波数で共振し、切欠き部分に配置された第２の
アンテナが逆Ｆアンテナである場合は、その対角の長さ
を約λ／４とする周波数で共振するので、一般的に用い
られている単周波逆Ｆアンテナに比べて、実装面積、実
装体積を共に増大することなく、多周波アンテナを実現
することが可能となる。The multi-frequency antenna according to the embodiment of the present invention has a notch portion of the inverted F antenna with a notch shown in FIG. This is a configuration in which an antenna is arranged.
With this configuration, the outer side of the inverted F antenna with a notch can be reduced in length by about half of the outer circumference to about λ / 4 (λ is a wavelength).
When the second antenna arranged in the notch portion is an inverted F antenna, it resonates at a frequency having a diagonal length of about λ / 4. As compared with a single-frequency inverted F antenna, a multi-frequency antenna can be realized without increasing both the mounting area and the mounting volume.
【００１４】（第１の実施形態）本発明に係る多周波ア
ンテナの第１の実施形態について説明する。第１の実施
形態の概略構成を図１に示す。(First Embodiment) A multi-frequency antenna according to a first embodiment of the present invention will be described. FIG. 1 shows a schematic configuration of the first embodiment.
【００１５】同図において、接地された接地導体板１０
１上には、前述の如く切欠き（スロット）１０８を有す
ることで小型化された第１の放射導体１０２が設置さ
れ、また、切欠き１０８内には、第２の放射導体１０３
が設置されている。第１の放射導体１０２は、第１の短
絡板１０４によって接地導体板１０１と接統され、また
第１の給電線１０５によって、図示しない第１の送受信
回路に接統されている。同様に第２の放射導体１０３
は、第２の短絡板１０６によって、接地導体板１０１と
接統され、また第２の給電線１０７によって、図示しな
い第２の送受信回路に接統されている。In FIG. 1, a grounded conductor plate 10
As described above, the first radiating conductor 102, which has been reduced in size by having the notch (slot) 108, as described above, is provided. In the notch 108, the second radiating conductor 103 is provided.
Is installed. The first radiation conductor 102 is connected to the ground conductor plate 101 by a first short-circuit plate 104 and connected to a first transmitting / receiving circuit (not shown) by a first power supply line 105. Similarly, the second radiation conductor 103
Are connected to the ground conductor plate 101 by a second short-circuit plate 106 and connected to a second transmitting / receiving circuit (not shown) by a second power supply line 107.
【００１６】このように構成することにより、第１の放
射導体１０２は図中ＬＡの長さが約λ／４（λは波長）
となる周波数Ａで共振し、第２の放射導体１０３は図中
ＬＢの長さが約λ／４となる周波数Ｂで共振する小型且
つ薄型の多周波逆Ｆアンテナが実現できる。With this configuration, the first radiation conductor 102 has a length LA of about λ / 4 (λ is a wavelength) in the drawing.
, And the second radiation conductor 103 can realize a small and thin multi-frequency inverted F antenna that resonates at a frequency B at which the length LB of the figure is about λ / 4.
【００１７】実装面積の上では、周波数Ａで共振するア
ンテナを実現するための実装面積と同等であり、実装高
さ（体積）の上でも周波数Ａで共振するアンテナを実現
するための実装高さ（体積）と同等であるので、図２
３、図２４で示した従来の多周波逆Ｆアンテナに比べて
小型、薄型化を実現している。即ち周波数Ｂで共振させ
るために新たに面積並びに体積の増加を必要としない構
成である。The mounting area is equivalent to the mounting area for realizing the antenna resonating at the frequency A, and the mounting height (volume) for realizing the antenna resonating at the frequency A is also high in the mounting height (volume). Since it is equivalent to (volume), FIG.
3. Smaller and thinner than the conventional multi-frequency inverted F antenna shown in FIG. In other words, the configuration does not require a new increase in area and volume to resonate at the frequency B.
【００１８】図２は、この第１の実施形態の多周波逆Ｆ
アンテナを動作させた場合の第１の放射導体１０２、第
２の放射導体１０３それぞれの共振特性２０１、２０２
を示している。FIG. 2 shows the multi-frequency inverse F of the first embodiment.
Resonance characteristics 201 and 202 of the first radiation conductor 102 and the second radiation conductor 103 when the antenna is operated
Is shown.
【００１９】（第２の実施形態）次に、本発明に係る多
周波アンテナの第２の実施形態について説明する。第２
の実施形態の概略構成を図３に示す。(Second Embodiment) Next, a second embodiment of the multi-frequency antenna according to the present invention will be described. Second
FIG. 3 shows a schematic configuration of the embodiment.
【００２０】同図において、接地された接地導体板３０
１上には、前述の如く切欠き３０８を有することで小型
化された第１の放射導体３０２が設置され、また切欠き
３０８内には、同様に切欠き３０９を有することで小型
化された第２の放射導体３０３が設置されている。第１
の放射導体３０２は、第１の短絡板３０４によって接地
導体板３０１と接統され、また第１の給電線３０５によ
って、図示しない第１の送受信回路に接続されている。
同様に第２の放射導体３０３は、第２の短絡板３０６に
よって、接地導体板３０１と接続され、また第２の給電
線３０７によって、図示しない第２の送受信回路に接続
されている。In FIG. 1, a grounded conductor plate 30 is grounded.
The first radiating conductor 302, which has been reduced in size by having the notch 308 as described above, is provided on the top 1, and the notch 309 has also been reduced in size by having the notch 309 in the notch 308. A second radiation conductor 303 is provided. First
The radiation conductor 302 is connected to the ground conductor plate 301 by a first short-circuit plate 304, and is connected to a first transmission / reception circuit (not shown) by a first feed line 305.
Similarly, the second radiation conductor 303 is connected to the ground conductor plate 301 by a second short-circuit plate 306, and is connected to a second transmission / reception circuit (not shown) by a second power supply line 307.
【００２１】このように構成することにより、周波数Ｂ
で共振する第２の放射導体３０３を小型化できるので、
同じ実装面積で放射導体が共振する周波数を低くするこ
とができる。図４は、この第２の実施形態の多周波逆Ｆ
アンテナを動作させた場合の第１の放射導体３０２、第
２の放射導体３０３それぞれの共振特性４０１、４０２
を示している。With this configuration, the frequency B
Since the second radiation conductor 303 that resonates at can be reduced in size,
The frequency at which the radiation conductor resonates can be reduced with the same mounting area. FIG. 4 shows a multi-frequency inverse F of the second embodiment.
Resonance characteristics 401 and 402 of the first radiation conductor 302 and the second radiation conductor 303 when the antenna is operated, respectively.
Is shown.
【００２２】（第３の実施形態）次に、本発明に係る多
周波アンテナの第３の実施形態について説明する。第３
の実施形態の概略構成を図５に示す。(Third Embodiment) Next, a third embodiment of the multi-frequency antenna according to the present invention will be described. Third
FIG. 5 shows a schematic configuration of the embodiment.
【００２３】同図において、接地された接地導体板５０
１上には、前述の如く切欠き５０８を有することで小型
化された第１の放射導体５０２が設置され、また、切欠
き５０８内には、同様に切欠き５０９を有することで小
型化された第２の放射導体５０３が設置され、更に、前
記切欠き５０９内には、第３の放射導体５１０が設置さ
れている。Referring to FIG. 1, a grounded conductor plate 50 is grounded.
The first radiating conductor 502, which has been reduced in size by having the notch 508 as described above, is installed on the top 1, and the notch 509 is also downsized by having the notch 509 in the notch 508. A second radiating conductor 503 is provided, and a third radiating conductor 510 is provided in the notch 509.
【００２４】第１の放射導体５０２は、第１の短絡板５
０４によって接地導体板５０１と接統され、また第１の
給電線５０５によって、図示しない第１の送受信回路に
接統されている。同様に第２の放射導体５０３は、第２
の短絡板５０６によって、接地導体板５０１と接続さ
れ、また第２の給電線５０７によって、図示しない第２
の送受信回路に接統されている。The first radiation conductor 502 is connected to the first short-circuit plate 5
04 is connected to the ground conductor plate 501, and is connected to a first transmission / reception circuit (not shown) by a first power supply line 505. Similarly, the second radiation conductor 503 is
Is connected to the ground conductor plate 501 by a short-circuit plate 506, and is connected to a second power supply line 507 (not shown).
Of the transmission and reception circuit.
【００２５】更に、第３の放射導体５１０は、第３の短
絡板５１１によって接地導体板５０１と接統され、また
第３の給電線５１２によって、図示しない第３の送受信
回路に接続されている。Further, the third radiation conductor 510 is connected to the ground conductor plate 501 by a third short-circuit plate 511, and is connected to a third transmission / reception circuit (not shown) by a third power supply line 512. .
【００２６】このように構成することにより、３つの周
波数Ａ，Ｂ，Ｃで共振する小型且つ薄型の多周波逆Ｆア
ンテナが実現できる。図６は、この第３の実施形態の多
周波逆Ｆアンテナを動作させた場合の複共振特性を示し
ている。同図において、６０１、６０２、及び６０３
は、それぞれ第１の放射導体５０２、第２の放射導体５
０３及び第３の放射導体５１０の共振特性を示す。な
お、図示はしないが、同様にして、４つの周波数、５つ
の周波数で共振する小型且つ薄型の多周波逆Ｆアンテナ
が実現できる。With this configuration, a small and thin multi-frequency inverted F antenna that resonates at three frequencies A, B, and C can be realized. FIG. 6 shows multiple resonance characteristics when the multi-frequency inverted F antenna according to the third embodiment is operated. In the same figure, 601, 602 and 603
Are the first radiation conductor 502 and the second radiation conductor 5 respectively.
11 shows the resonance characteristics of the third radiation conductor 510 and the third radiation conductor 510. Although not shown, a small and thin multi-frequency inverted-F antenna that resonates at four frequencies and five frequencies can be realized in a similar manner.
【００２７】（第４の実施形態）次に、本発明に係る多
周波アンテナの第４の実施形態について説明する。この
第４の実施形態は、いずれも第１の放射導体において小
型化のために設けられた切欠きの内部に、線状の第２の
放射導体を設置した多周波アンテナである。(Fourth Embodiment) Next, a fourth embodiment of the multi-frequency antenna according to the present invention will be described. The fourth embodiment is a multi-frequency antenna in which a linear second radiation conductor is provided inside a notch provided for miniaturization in the first radiation conductor.
【００２８】第４の実施形態の概略構成を図７乃至図９
に示す。図７（ａ）は線状放射導体として、線状逆Ｆア
ンテナ７０３を第１の放射導体７０１の切欠き７０２内
に設置した場合である。また同図（ｂ）は同じく線状逆
Ｆアンテナ７０３を第１の放射導体７０１の切欠き７０
２内に、切欠き７０２の対角線に沿って設置した場合で
ある。FIGS. 7 to 9 show a schematic configuration of the fourth embodiment.
Shown in FIG. 7A shows a case where a linear inverted F antenna 703 is installed in a notch 702 of the first radiation conductor 701 as a linear radiation conductor. FIG. 2B also shows a linear inverted F antenna 703 with a notch 70 of the first radiation conductor 701.
2 is installed along the diagonal of the notch 702.
【００２９】なお、図７（ａ）及び（ｂ）の線状逆Ｆア
ンテナ７０３を、線状ダイポールアンテナに代えてもよ
い。次に図８は線状スパイラルアンテナ８０３を第１の
放射導体８０１の切欠き８０２内に設置した場合であ
り、図９は折り畳まれた線状ダイポールアンテナ９０３
を第１の放射導体９０１の切欠き９０２内に設置した場
合である。このように、本発明の多周波アンテナは、切
欠き内に線状素子を設置することでも実現できる。The linear inverted F antenna 703 shown in FIGS. 7A and 7B may be replaced with a linear dipole antenna. Next, FIG. 8 shows a case where the linear spiral antenna 803 is installed in the notch 802 of the first radiation conductor 801, and FIG. 9 shows a folded linear dipole antenna 903.
In the notch 902 of the first radiation conductor 901. As described above, the multi-frequency antenna of the present invention can also be realized by installing a linear element in the notch.
【００３０】（第５の実施形態）次に、本発明に係る多
周波アンテナの第５の実施形態について説明する。第５
の実施形態の概略構成を図１０に示す。(Fifth Embodiment) Next, a fifth embodiment of the multi-frequency antenna according to the present invention will be described. Fifth
FIG. 10 shows a schematic configuration of the embodiment.
【００３１】この第５の実施形態は、外側の放射導体と
内側の放射導体それぞれの給電線並びに短絡板の位置関
係を変えたものである。図１０（ａ）は、外側の第１の
放射導体１００１と内側の第２の放射導体１００２の、
それぞれの給電線１００３、１００５、並びに短絡板１
００４、１００６の位置関係を変えて、放射導体１００
１、１００２上に誘起される電流分布を調整したもので
ある。このように電流分布を調整することにより、第１
の放射導体１００１と第２の放射導体１００２のアイソ
レーション特性が良い多周波逆Ｆアンテナを実現したも
のである。In the fifth embodiment, the positional relationship between the feed line and the short-circuit plate of each of the outer radiation conductor and the inner radiation conductor is changed. FIG. 10A shows the outer first radiating conductor 1001 and the inner second radiating conductor 1002,
Each power supply line 1003, 1005 and short-circuit plate 1
By changing the positional relationship between 004 and 1006, the radiation conductor 100
1, the distribution of current induced on 1002 is adjusted. By adjusting the current distribution in this manner, the first
This realizes a multi-frequency inverted F antenna having good isolation characteristics between the radiating conductor 1001 and the second radiating conductor 1002.
【００３２】図１０（ｂ）は、第１の放射導体１００１
と第２の放射導体１００２の偏波が直交するように、そ
れぞれの給電線１００３、１００５、並びに短絡板１０
０４、１００６の位置を定めることにより、第１の放射
導体１００１と第２の放射導体１００２のアイソレーシ
ョン特性が良い多周波逆Ｆアンテナを実現したものであ
る。このようにして、２つの送受信回路間のアイソレー
ション特性が良好な端末を実現することも可能である。FIG. 10B shows a first radiation conductor 1001.
So that the polarization of the second radiation conductor 1002 is orthogonal to that of the second radiation conductor 1002.
By determining the positions of the first and second radiating conductors 1001 and 1002, a multi-frequency inverted-F antenna with good isolation characteristics is realized. In this way, it is also possible to realize a terminal having good isolation characteristics between two transmission / reception circuits.
【００３３】（第６の実施形態）次に、本発明に係る多
周波アンテナの第６の実施形態について説明する。第６
の実施形態の概略構成を図１１及び図１２に示す。(Sixth Embodiment) Next, a sixth embodiment of the multi-frequency antenna according to the present invention will be described. Sixth
11 and 12 show a schematic configuration of this embodiment.
【００３４】図１１は、第１及び第２の放射導体１１０
１、１１０２のうちの一方の放射導体を無給電としたも
ので、同図（ａ）は内側の放射導体１１０２を無給電と
した場合、同図（ｂ）は外側の放射導体１１０１を無給
電とした場合である。FIG. 11 shows the first and second radiation conductors 110.
1A and 1B, one of the radiating conductors is unpowered. FIG. 2A shows a case where the inner radiating conductor 1102 is unpowered, and FIG. 2B shows a case where the outer radiating conductor 1101 is not powered. Is the case.
【００３５】同図（ａ）の場合、内側の放射導体１１０
２は外側の放射導体１１０１との結合によって励振さ
れ、無給電素子として動作する。一方、同図（ｂ）の場
合、外側の放射導体１１０１は、内側の放射導体１１０
２との結合によって励振され、無給電素子として動作す
る。In the case of FIG. 3A, the inner radiation conductor 110
2 is excited by coupling with the outer radiation conductor 1101, and operates as a parasitic element. On the other hand, in the case of FIG. 2B, the outer radiation conductor 1101 is connected to the inner radiation conductor 110.
2 and act as a parasitic element.
【００３６】図１２の（ａ）及び（ｂ）に示すものは、
無給電素子である第２の放射導体１２０１に接続される
短絡板１２０２の位置を変えることで、第２の放射導体
１２０１上の電流分布を調節したり、放射パターンなど
を制御した場合の例である。FIGS. 12A and 12B show:
In an example in which the current distribution on the second radiation conductor 1201 is adjusted or the radiation pattern is controlled by changing the position of the short-circuit plate 1202 connected to the second radiation conductor 1201 which is a parasitic element. is there.
【００３７】また、一般的にマイクロストリップアンテ
ナは狭帯域であり、広帯域化のための数々の試みが為さ
れているが、本多周波逆Ｆアンテナの場合、前述の無給
電素子の共振周波数を主放射素子の共振周波数に近接す
るよう設計することで複共振逆Ｆアンテナとし、広帯域
化を図ることも可能である。In general, a microstrip antenna has a narrow band, and various attempts have been made to widen the band. In the case of the present multi-frequency inverted F antenna, the resonance frequency of the parasitic element is reduced. By designing the antenna so as to be close to the resonance frequency of the main radiating element, it is possible to obtain a multi-resonance inverted-F antenna and widen the band.
【００３８】（実施例）次に、本発明の具体的な実施例
について説明する。この実施例のアンテナは、図１３に
示す形状（寸法）の多周波逆Ｆアンテナとする。なお、
同図（ａ）は平面図、同図（ｂ）は側面図である。また
この実施例のアンテナの放射パターンの解析のための座
標系を図１４に示す。(Example) Next, a specific example of the present invention will be described. The antenna of this embodiment is a multi-frequency inverted F antenna having the shape (dimensions) shown in FIG. In addition,
FIG. 1A is a plan view, and FIG. 1B is a side view. FIG. 14 shows a coordinate system for analyzing the radiation pattern of the antenna of this embodiment.
【００３９】この実施例のアンテナの特性を電磁界解析
（モーメント法）を用いて解析した場合の各アンテナの
給電点での反射特性を図１５に示す。この実施例では、
ＧＳＭとＰＨＳの２つのシステムを送受信可能なデュア
ルモード端末の内蔵アンテナを想定して、ＧＳＭの無線
周波数８００ＭＨｚ帯とＰＨＳの無線周波数１．９ＧＨ
ｚ帯とを共に送受信可能な多周波逆Ｆアンテナを実現し
ている。FIG. 15 shows the reflection characteristics at the feeding point of each antenna when the characteristics of the antenna of this embodiment are analyzed using electromagnetic field analysis (moment method). In this example,
Assuming a built-in antenna of a dual mode terminal capable of transmitting and receiving two systems of GSM and PHS, a GSM radio frequency band of 800 MHz and a PHS radio frequency band of 1.9 GHz
A multi-frequency inverted-F antenna capable of transmitting and receiving signals in the z-band is realized.
【００４０】図１５より本アンテナが８００ＭＨｚ帯と
１．９ＧＨｚ帯の２つ周波数帯で共振していることがわ
かる。図１６は、８００ＭＨｚ帯における水平面放射パ
ターンの解析結果を示している。図１７及び図１８は８
００ＭＨｚ帯における垂直面放射パターン（図１４に示
す座標系のφ＝０度、９０度）の解析結果を示してい
る。FIG. 15 shows that the present antenna resonates in two frequency bands, 800 MHz band and 1.9 GHz band. FIG. 16 shows an analysis result of a horizontal radiation pattern in the 800 MHz band. FIG. 17 and FIG.
15 shows an analysis result of a vertical plane radiation pattern in the 00 MHz band (φ = 0 degree, 90 degrees in the coordinate system shown in FIG. 14).
【００４１】図１９は１．９ＧＨｚ帯における水平面放
射パターンの解析結果を示している。図２０及び図２１
は１．９ＧＨｚ帯における垂直面放射パターン（図１４
に示す座標系のφ＝０度、９０度）の解析結果を示して
いる。FIG. 19 shows an analysis result of a horizontal radiation pattern in the 1.9 GHz band. 20 and 21
Is a vertical plane radiation pattern in the 1.9 GHz band (FIG. 14).
(Φ = 0 degree, 90 degree in the coordinate system shown in FIG. 3).
【００４２】８００ＭＨｚ帯、１．９ＧＨｚ帯共に、水
平面無指向性のパターンが得られていることがわかる。
このように本多周波逆Ｆアンテナの構成をとることによ
り、小型且つ薄型の各種デュアルモード端末の内蔵アン
テナを容易に実現することができる。It can be seen that horizontal omnidirectional patterns are obtained in both the 800 MHz band and the 1.9 GHz band.
By adopting the configuration of the present multi-frequency inverted-F antenna, small and thin built-in antennas of various dual-mode terminals can be easily realized.
【００４３】次に、図２２は、図１３に示した多周波逆
Ｆアンテナにおいて、ＰＨＳの無線周波数帯域を狭帯域
化した例である。なお、同図（ａ）は平面図、同図
（ｂ）は側面図である。Next, FIG. 22 shows an example in which the radio frequency band of the PHS is narrowed in the multi-frequency inverted F antenna shown in FIG. FIG. 1A is a plan view, and FIG. 1B is a side view.
【００４４】このように、ＰＨＳ用の逆Ｆアンテナ２２
０２の高さをＧＳＭ用の切欠き付逆Ｆアンテナ２２０１
の高さに比べて低くすることにより、狭帯域化を図るこ
とができる。As described above, the inverted F antenna 22 for the PHS
02 height of notch inverted F antenna 2201 for GSM
The band can be narrowed by making the height lower than the height.
【００４５】（変形例）以上本発明の実施形態及び具体
的実施例について説明したが、これらの多周波逆Ｆアン
テナは、それぞれのアンテナの接地導体からの高さを調
節することにより、それぞれの無線周波数帯域幅を別々
に調節することも可能である。即ちアンテナの接地導体
からの高さを低くすることにより、狭帯域化を図ること
ができる。(Modifications) The embodiments and specific examples of the present invention have been described above. These multi-frequency inverted-F antennas can be adjusted by adjusting the height of each antenna from the ground conductor. It is also possible to adjust the radio frequency bandwidth separately. That is, the band can be narrowed by reducing the height of the antenna from the ground conductor.
【００４６】更に、外側の放射導体と接地導体の間の誘
電率と、内側の放射導体と接地導体の間の誘電率を変え
ることによって、共振周波数や帯域幅などを調節するこ
とも可能である。即ち、誘電率を大きくすることによ
り、共振周波数を低くし、帯域幅を狭くすることができ
る。Furthermore, by changing the dielectric constant between the outer radiation conductor and the ground conductor and the dielectric constant between the inner radiation conductor and the ground conductor, it is also possible to adjust the resonance frequency, the bandwidth, and the like. . That is, by increasing the dielectric constant, it is possible to lower the resonance frequency and narrow the bandwidth.
【００４７】なお、これらの多周波逆Ｆアンテナは給電
点の位置を放射導体のエッジ付近に限定する必要はな
く、給電位置を調節することで、送受信回路との整合を
とることも可能である。また、短絡板の幅も限定する必
要もなく、短絡板の幅を調節することで、共振周波数や
放射パターン等を任意に決めることも可能である。In these multi-frequency inverted F antennas, it is not necessary to limit the position of the feeding point to the vicinity of the edge of the radiation conductor, and by adjusting the feeding position, it is possible to achieve matching with the transmitting / receiving circuit. . Further, the width of the short-circuit plate does not need to be limited, and the resonance frequency, the radiation pattern, and the like can be arbitrarily determined by adjusting the width of the short-circuit plate.
【００４８】[0048]
【発明の効果】本発明によれば、一般的に用いられてい
る単周波逆Ｆアンテナに比べて、実装面積、実装体積を
共に増大することなく、小型、薄型の多周波アンテナを
容易に実現することが可能となる。According to the present invention, a small and thin multi-frequency antenna can be easily realized without increasing both the mounting area and the mounting volume as compared with a generally used single-frequency inverted F antenna. It is possible to do.
【図１】 本発明に係る多周波アンテナの第１の実施形
態の概略構成を示す斜視図。FIG. 1 is a perspective view showing a schematic configuration of a multi-frequency antenna according to a first embodiment of the present invention.
【図２】 第１の実施形態における共振特性を説明する
ための図。FIG. 2 is a diagram for explaining resonance characteristics in the first embodiment.
【図３】 本発明に係る多周波アンテナの第２の実施形
態の概略構成を示す斜視図。FIG. 3 is a perspective view showing a schematic configuration of a multi-frequency antenna according to a second embodiment of the present invention.
【図４】 第２の実施形態における共振特性を説明する
ための図。FIG. 4 is a view for explaining resonance characteristics in the second embodiment.
【図５】 本発明に係る多周波アンテナの第３の実施形
態の概略構成を示す斜視図。FIG. 5 is a perspective view showing a schematic configuration of a multi-frequency antenna according to a third embodiment of the present invention.
【図６】 第３の実施形態における共振特性を説明する
ための図。FIG. 6 is a view for explaining resonance characteristics in the third embodiment.
【図７】 本発明に係る多周波アンテナの第４の実施形
態の概略構成を示す斜視図。FIG. 7 is a perspective view showing a schematic configuration of a multi-frequency antenna according to a fourth embodiment of the present invention.
【図８】 本発明に係る多周波アンテナの第４の実施形
態の概略構成を示す斜視図。FIG. 8 is a perspective view showing a schematic configuration of a fourth embodiment of the multi-frequency antenna according to the present invention.
【図９】 本発明に係る多周波アンテナの第４の実施形
態の概略構成を示す斜視図。FIG. 9 is a perspective view showing a schematic configuration of a multi-frequency antenna according to a fourth embodiment of the present invention.
【図１０】 本発明に係る多周波アンテナの第５の実施
形態の概略構成を示す斜視図。FIG. 10 is a perspective view showing a schematic configuration of a multi-frequency antenna according to a fifth embodiment of the present invention.
【図１１】 本発明に係る多周波アンテナの第６の実施
形態の概略構成を示す斜視図。FIG. 11 is a perspective view showing a schematic configuration of a multi-frequency antenna according to a sixth embodiment of the present invention.
【図１２】 本発明に係る多周波アンテナの第６の実施
形態の概略構成を示す斜視図。FIG. 12 is a perspective view showing a schematic configuration of a sixth embodiment of the multi-frequency antenna according to the present invention.
【図１３】 本発明に係る多周波アンテナの実施例の構
成を示す平面図及び側面図。FIG. 13 is a plan view and a side view showing a configuration of an embodiment of the multi-frequency antenna according to the present invention.
【図１４】 図１３に示す実施例のアンテナの放射パタ
ーンの解析のための座標系を示す図。FIG. 14 is a diagram showing a coordinate system for analyzing a radiation pattern of the antenna according to the embodiment shown in FIG. 13;
【図１５】 図１３に示す実施例のアンテナの反射特性
を示す図。FIG. 15 is a diagram showing reflection characteristics of the antenna of the embodiment shown in FIG.
【図１６】 図１３に示す実施例のアンテナの、８００
ＭＨｚ帯における水平面放射パターンの解析結果を示す
図。FIG. 16 shows an example of the antenna of the embodiment shown in FIG.
The figure which shows the analysis result of the horizontal plane radiation pattern in a MHz band.
【図１７】 図１３に示す実施例のアンテナの、８００
ＭＨｚ帯における垂直面放射パターン（φ＝０度）の解
析結果を示す図。FIG. 17 shows an example of the antenna of the embodiment shown in FIG.
The figure which shows the analysis result of the vertical plane radiation pattern ((phi) = 0 degree) in a MHz band.
【図１８】 図１３に示す実施例のアンテナの、８００
ＭＨｚ帯における垂直面放射パターン（φ＝９０度）の
解析結果を示す図。FIG. 18 shows an example of the antenna of the embodiment shown in FIG.
The figure which shows the analysis result of the vertical plane radiation pattern ((phi) = 90 degree) in a MHz band.
【図１９】 図１３に示す実施例のアンテナの、１．９
ＧＨｚ帯における水平面放射パターンの解析結果を示す
図。FIG. 19 shows an example of the antenna of the embodiment shown in FIG.
The figure which shows the analysis result of the horizontal plane radiation pattern in a GHz band.
【図２０】 図１３に示す実施例のアンテナの、１．９
ＧＨｚ帯における垂直面放射パターン（φ＝０度）の解
析結果を示す図。FIG. 20 shows an example of the antenna of the embodiment shown in FIG.
The figure which shows the analysis result of the vertical plane radiation pattern ((phi) = 0 degree) in a GHz band.
【図２１】 図１３に示す実施例のアンテナの、１．９
ＧＨｚ帯における垂直面放射パターン（φ＝９０度）の
解析結果を示す図。FIG. 21 shows an example of 1.9 of the antenna of the embodiment shown in FIG.
The figure which shows the analysis result of the vertical plane radiation pattern ((phi) = 90 degree) in GHz band.
【図２２】 本発明に係る多周波アンテナの他の実施例
の構成を示す平面図及び側面図。FIG. 22 is a plan view and a side view showing the configuration of another embodiment of the multi-frequency antenna according to the present invention.
【図２３】 従来の横置き型多周波逆Ｆアンテナの概略
構成を示す斜視図。FIG. 23 is a perspective view showing a schematic configuration of a conventional horizontal type multi-frequency inverted-F antenna.
【図２４】 従来の縦積み型多周波逆Ｆアンテナの概略
構成を示す斜視図。FIG. 24 is a perspective view showing a schematic configuration of a conventional vertically stacked multi-frequency inverted F antenna.
【図２５】 逆Ｆアンテナの一般的な構成を示す斜視
図。FIG. 25 is a perspective view showing a general configuration of an inverted-F antenna.
【図２６】 小型化された逆Ｆアンテナの一例の構成を
示す斜視図。FIG. 26 is a perspective view showing a configuration of an example of a downsized inverted-F antenna.
１０１…接地導体板 １０２…第１の放射導体 １０３…第２の放射導体 １０４…第１の短絡板 １０５…第１の給電線 １０６…第２の短絡板 １０７…第２の給電線 １０８…切欠き ３０１…接地導体板 ３０２…第１の放射導体 ３０３…第２の放射導体 ３０４…第１の短絡板 ３０５…第１の給電線 ３０６…第２の短絡板 ３０７…第２の給電線 ３０８、３０９…切欠き ５０１…接地導体板 ５０２…第１の放射導体 ５０３…第２の放射導体 ５０４…第１の短絡板 ５０５…第１の給電線 ５０６…第２の短絡板 ５０７…第２の給電線 ５０８、５０９…切欠き ５１０…第３の放射導体 ５１１…第３の短絡版 ５１２…第３の給電線 ７０１…第１の放射導体 ７０２…切欠き ７０３…線状逆Ｆアンテナ ８０１…第１の放射導体 ８０２…切欠き ８０３…線状スパイラルアンテナ ９０１…第１の放射導体 ９０２…切欠き ９０３…折り畳まれた線状ダイポールアンテナ １００１…第１の放射導体 １００２…第２の放射導体 １００３、１００５…給電線 １００４、１００６…短絡板 １１０１…第１の放射導体 １１０２…第２の放射導体 １２０１…第２の放射導体 １２０２…短絡板 ２２０２…ＰＨＳ用の逆Ｆアンテナ ２２０１…ＧＳＭ用の切欠き付逆Ｆアンテナ ２３１…共平面 ２３２、２３３…逆Ｆアンテナ ２４１…共平面 ２４２、２４３…逆Ｆアンテナ ２５１…接地導体板 ２５２…放射導体 ２５３…短絡板 ２５４…給電線 ２６１…接地導体板 ２６２…切欠き ２６３…放射導体 ２６４…短絡板 ２６５…給電線 101 ground conductor plate 102 first radiation conductor 103 second radiation conductor 104 first short-circuit plate 105 first power supply line 106 second short-circuit plate 107 second power supply line 108 off Chip 301 ground conductor plate 302 first radiation conductor 303 second radiation conductor 304 first short-circuit plate 305 first power supply line 306 second short-circuit plate 307 second power supply line 308 309: Notch 501: Ground conductor plate 502: First radiation conductor 503: Second radiation conductor 504 ... First short circuit plate 505 ... First power supply line 506 ... Second short circuit plate 507 ... Second power supply Wires 508, 509 Notch 510 Third radiation conductor 511 Third short-circuit plate 512 Third power supply line 701 First radiation conductor 702 Notch 703 Linear inverted F antenna 801 First Radiating conductor 802 ... Notch 8 3 Linear Spiral Antenna 901 First Radiating Conductor 902 Notch 903 Folded Linear Dipole Antenna 1001 First Radiating Conductor 1002 Second Radiating Conductor 1003 1005 100 Feed Line 1004 1006 Short plate 1101 First radiation conductor 1102 Second radiation conductor 1201 Second radiation conductor 1202 Short plate 2202 Inverted F antenna for PHS 2201 Notched inverted F antenna for GSM 231 Coplanar 232, 233 ... inverted F antenna 241 ... coplanar 242, 243 ... inverted F antenna 251 ... ground conductor plate 252 ... radiation conductor 253 ... short circuit plate 254 ... feed line 261 ... ground conductor plate 262 ... notch 263 ... radiation conductor 264 ... Short-circuit plate 265: Power supply line
Claims (6)
のアンテナと、この第１のアンテナと異なる周波数で共
振する第２のアンテナとを具備し、前記第２のアンテナ
が、前記第１のアンテナの切欠きの内部に配置されるこ
とを特徴とする多周波アンテナ。1. A first antenna comprising an inverted F antenna having a notch.
And a second antenna resonating at a frequency different from that of the first antenna, wherein the second antenna is disposed inside a notch of the first antenna. Multi-frequency antenna.
ことを特徴とする請求項１に記載の多周波アンテナ。2. The multi-frequency antenna according to claim 1, wherein said second antenna is an inverted F antenna.
であることを特徴とする請求項２に記載の多周波アンテ
ナ。3. The multi-frequency antenna according to claim 2, wherein said second antenna has a notch.
３のアンテナが配置されることを特徴とする請求項３に
記載の多周波アンテナ。4. The multi-frequency antenna according to claim 3, wherein a third antenna is disposed inside the notch of the second antenna.
ことを特徴とする請求項４に記載の多周波アンテナ。5. The multi-frequency antenna according to claim 4, wherein said third antenna is an inverted F antenna.
ことを特徴とする請求項１に記載の多周波アンテナ。6. The multi-frequency antenna according to claim 1, wherein said second antenna is a linear antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9314151A JPH11150415A (en) | 1997-11-17 | 1997-11-17 | Multiple frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9314151A JPH11150415A (en) | 1997-11-17 | 1997-11-17 | Multiple frequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11150415A true JPH11150415A (en) | 1999-06-02 |
Family
ID=18049853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9314151A Withdrawn JPH11150415A (en) | 1997-11-17 | 1997-11-17 | Multiple frequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11150415A (en) |
Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001292021A (en) * | 2000-04-10 | 2001-10-19 | Dx Antenna Co Ltd | Patch antenna |
| JP2002185238A (en) * | 2000-12-11 | 2002-06-28 | Sony Corp | Built-in antenna device corresponding to dual band, and portable wireless terminal equipped therewith |
| WO2002080307A1 (en) * | 2001-03-29 | 2002-10-10 | Tyco Electronics Corporation | Compact multi-band antenna |
| KR20020091760A (en) * | 2001-05-30 | 2002-12-06 | 주식회사 에이스테크놀로지 | A built-in type antenna for a portable mobile |
| EP1359641A1 (en) * | 2002-05-03 | 2003-11-05 | Siemens Aktiengesellschaft | Pifa antenna device for mobile communication terminals |
| JP2004096259A (en) * | 2002-08-30 | 2004-03-25 | Matsushita Electric Ind Co Ltd | Multi-frequency microstrip antenna |
| JP2004516700A (en) * | 2000-12-16 | 2004-06-03 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Antenna device |
| EP1336222B1 (en) * | 2000-11-24 | 2004-08-11 | Siemens Aktiengesellschaft | Pifa antenna device for mobile communication terminals |
| JP2005507185A (en) * | 2001-05-29 | 2005-03-10 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Integrated antenna for laptop applications |
| JP2005198335A (en) * | 2005-02-08 | 2005-07-21 | Matsushita Electric Ind Co Ltd | Dual-resonant dielectric antenna and on-vehicle radio apparatus |
| JP2006060770A (en) * | 2004-03-31 | 2006-03-02 | Toto Ltd | Microstrip antenna and high frequency sensor |
| EP1649544A1 (en) * | 2003-07-16 | 2006-04-26 | Centurion Wireless Technologies, Inc. | Antenna with shorted active and passive planar loops and method of making the same |
| WO2006059406A1 (en) * | 2004-12-03 | 2006-06-08 | Murata Manufacturing Co., Ltd. | Antenna structure and wireless communication device with it |
| WO2006098089A1 (en) * | 2005-03-15 | 2006-09-21 | Matsushita Electric Industrial Co., Ltd. | Antenna assembly and radio communication apparatus employing same |
| JP2006295966A (en) * | 2004-03-31 | 2006-10-26 | Toto Ltd | Microstrip antenna and high frequency sensor |
| JP2006527557A (en) * | 2003-06-11 | 2006-11-30 | ソニー エリクソン モバイル コミュニケーションズ， エービー | Loop type multi-branch planar antenna having a plurality of resonance frequency bands and wireless terminal incorporating the same |
| EP1360738B1 (en) * | 2000-12-20 | 2007-02-28 | AMC Centurion AB | Antenna device and method of adjusting said antenna device |
| GB2430308A (en) * | 2005-09-15 | 2007-03-21 | Dell Products Lp | Antenna structure with multiple radiating elements |
| JP2007081824A (en) * | 2005-09-14 | 2007-03-29 | Toshiba Corp | Antenna device and monopulse radar device using it |
| WO2007060782A1 (en) * | 2005-11-24 | 2007-05-31 | National University Corporation Saitama University | Multifrequency microstrip antenna |
| JP2008104198A (en) * | 2006-10-20 | 2008-05-01 | Research In Motion Ltd | Mobile wireless communications device with multiple rf transceivers using a common antenna at a same time, and related methods |
| US7471246B2 (en) | 2002-07-15 | 2008-12-30 | Fractus, S.A. | Antenna with one or more holes |
| WO2009044540A1 (en) * | 2007-10-02 | 2009-04-09 | Panasonic Corporation | Portable wireless communication device |
| EP2065974A1 (en) * | 2007-11-20 | 2009-06-03 | Electronics and Telecommunications Research Institute | Multiband antenna of gap filler system |
| EP1067627B1 (en) * | 1999-07-09 | 2009-06-24 | IPCom GmbH & Co. KG | Dual band radio apparatus |
| WO2009146282A1 (en) * | 2008-05-29 | 2009-12-03 | Motorola, Inc. | Self-resonating antenna |
| US7952534B2 (en) | 2004-03-31 | 2011-05-31 | Toto Ltd. | Microstrip antenna |
| JP2012054917A (en) * | 2010-08-05 | 2012-03-15 | Mitsubishi Electric Corp | Antenna device |
| JP2012147421A (en) * | 2010-12-20 | 2012-08-02 | Nippon Telegr & Teleph Corp <Ntt> | Finline type ortho-mode transducer |
| JP2012227697A (en) * | 2011-04-19 | 2012-11-15 | Nec Corp | Antenna device |
| JP2013005431A (en) * | 2011-06-10 | 2013-01-07 | Samsung Electronics Co Ltd | Antenna device of mobile terminal device |
| US9368860B2 (en) | 2013-01-11 | 2016-06-14 | Fujitsu Limited | Patch antenna |
| WO2021019899A1 (en) * | 2019-07-29 | 2021-02-04 | 株式会社村田製作所 | Antenna device, antenna module, and communication device |
| CN113644439A (en) * | 2021-08-31 | 2021-11-12 | 维沃移动通信有限公司 | Antenna module and electronic device |
-
1997
- 1997-11-17 JP JP9314151A patent/JPH11150415A/en not_active Withdrawn
Cited By (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1067627B1 (en) * | 1999-07-09 | 2009-06-24 | IPCom GmbH & Co. KG | Dual band radio apparatus |
| JP2001292021A (en) * | 2000-04-10 | 2001-10-19 | Dx Antenna Co Ltd | Patch antenna |
| US7102575B2 (en) | 2000-11-24 | 2006-09-05 | Siemens Aktiengesellschaft | PIFA antenna apparatus for mobile communications terminals |
| EP1336222B1 (en) * | 2000-11-24 | 2004-08-11 | Siemens Aktiengesellschaft | Pifa antenna device for mobile communication terminals |
| JP2002185238A (en) * | 2000-12-11 | 2002-06-28 | Sony Corp | Built-in antenna device corresponding to dual band, and portable wireless terminal equipped therewith |
| JP2004516700A (en) * | 2000-12-16 | 2004-06-03 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Antenna device |
| EP1360738B1 (en) * | 2000-12-20 | 2007-02-28 | AMC Centurion AB | Antenna device and method of adjusting said antenna device |
| WO2002080307A1 (en) * | 2001-03-29 | 2002-10-10 | Tyco Electronics Corporation | Compact multi-band antenna |
| JP2005507185A (en) * | 2001-05-29 | 2005-03-10 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Integrated antenna for laptop applications |
| KR20020091760A (en) * | 2001-05-30 | 2002-12-06 | 주식회사 에이스테크놀로지 | A built-in type antenna for a portable mobile |
| EP1359641A1 (en) * | 2002-05-03 | 2003-11-05 | Siemens Aktiengesellschaft | Pifa antenna device for mobile communication terminals |
| US7907092B2 (en) | 2002-07-15 | 2011-03-15 | Fractus, S.A. | Antenna with one or more holes |
| US7471246B2 (en) | 2002-07-15 | 2008-12-30 | Fractus, S.A. | Antenna with one or more holes |
| JP2004096259A (en) * | 2002-08-30 | 2004-03-25 | Matsushita Electric Ind Co Ltd | Multi-frequency microstrip antenna |
| JP2006527557A (en) * | 2003-06-11 | 2006-11-30 | ソニー エリクソン モバイル コミュニケーションズ， エービー | Loop type multi-branch planar antenna having a plurality of resonance frequency bands and wireless terminal incorporating the same |
| EP1649544A1 (en) * | 2003-07-16 | 2006-04-26 | Centurion Wireless Technologies, Inc. | Antenna with shorted active and passive planar loops and method of making the same |
| EP1649544A4 (en) * | 2003-07-16 | 2006-07-12 | Centurion Wireless Tech Inc | Antenna with shorted active and passive planar loops and method of making the same |
| JP2006060770A (en) * | 2004-03-31 | 2006-03-02 | Toto Ltd | Microstrip antenna and high frequency sensor |
| JP2006295966A (en) * | 2004-03-31 | 2006-10-26 | Toto Ltd | Microstrip antenna and high frequency sensor |
| US7952534B2 (en) | 2004-03-31 | 2011-05-31 | Toto Ltd. | Microstrip antenna |
| WO2006059406A1 (en) * | 2004-12-03 | 2006-06-08 | Murata Manufacturing Co., Ltd. | Antenna structure and wireless communication device with it |
| JP2005198335A (en) * | 2005-02-08 | 2005-07-21 | Matsushita Electric Ind Co Ltd | Dual-resonant dielectric antenna and on-vehicle radio apparatus |
| WO2006098089A1 (en) * | 2005-03-15 | 2006-09-21 | Matsushita Electric Industrial Co., Ltd. | Antenna assembly and radio communication apparatus employing same |
| JP2007081824A (en) * | 2005-09-14 | 2007-03-29 | Toshiba Corp | Antenna device and monopulse radar device using it |
| GB2430308B (en) * | 2005-09-15 | 2010-03-10 | Dell Products Lp | Combination antenna with multiple feed points |
| GB2430308A (en) * | 2005-09-15 | 2007-03-21 | Dell Products Lp | Antenna structure with multiple radiating elements |
| US7605763B2 (en) | 2005-09-15 | 2009-10-20 | Dell Products L.P. | Combination antenna with multiple feed points |
| WO2007060782A1 (en) * | 2005-11-24 | 2007-05-31 | National University Corporation Saitama University | Multifrequency microstrip antenna |
| JP2008104198A (en) * | 2006-10-20 | 2008-05-01 | Research In Motion Ltd | Mobile wireless communications device with multiple rf transceivers using a common antenna at a same time, and related methods |
| WO2009044540A1 (en) * | 2007-10-02 | 2009-04-09 | Panasonic Corporation | Portable wireless communication device |
| US8200302B2 (en) | 2007-10-02 | 2012-06-12 | Panasonic Corporation | Mobile wireless communication apparatus having a plurality of antenna elements |
| JP5102301B2 (en) * | 2007-10-02 | 2012-12-19 | パナソニック株式会社 | Portable wireless communication device |
| EP2065974A1 (en) * | 2007-11-20 | 2009-06-03 | Electronics and Telecommunications Research Institute | Multiband antenna of gap filler system |
| WO2009146282A1 (en) * | 2008-05-29 | 2009-12-03 | Motorola, Inc. | Self-resonating antenna |
| US8188929B2 (en) | 2008-05-29 | 2012-05-29 | Motorola Mobility, Inc. | Self-resonating antenna |
| JP2012054917A (en) * | 2010-08-05 | 2012-03-15 | Mitsubishi Electric Corp | Antenna device |
| JP2012147421A (en) * | 2010-12-20 | 2012-08-02 | Nippon Telegr & Teleph Corp <Ntt> | Finline type ortho-mode transducer |
| JP2012227697A (en) * | 2011-04-19 | 2012-11-15 | Nec Corp | Antenna device |
| JP2013005431A (en) * | 2011-06-10 | 2013-01-07 | Samsung Electronics Co Ltd | Antenna device of mobile terminal device |
| US9368860B2 (en) | 2013-01-11 | 2016-06-14 | Fujitsu Limited | Patch antenna |
| WO2021019899A1 (en) * | 2019-07-29 | 2021-02-04 | 株式会社村田製作所 | Antenna device, antenna module, and communication device |
| CN113644439A (en) * | 2021-08-31 | 2021-11-12 | 维沃移动通信有限公司 | Antenna module and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH11150415A (en) | Multiple frequency antenna | |
| KR100771775B1 (en) | Perpendicular array internal antenna | |
| JP3753436B2 (en) | Multiband printed monopole antenna | |
| US6759990B2 (en) | Compact antenna with circular polarization | |
| US6337667B1 (en) | Multiband, single feed antenna | |
| US7339531B2 (en) | Multi frequency magnetic dipole antenna structures and method of reusing the volume of an antenna | |
| EP1590857B1 (en) | Low profile dual frequency dipole antenna structure | |
| US6606071B2 (en) | Multifrequency antenna with a slot-type conductor and a strip-shaped conductor | |
| US20030201943A1 (en) | Single feed tri-band pifa with parasitic element | |
| US20010007445A1 (en) | Method for coupling a signal and an antenna structure | |
| JP2004088218A (en) | Planar antenna | |
| US7173566B2 (en) | Low-sidelobe dual-band and broadband flat endfire antenna | |
| JP2001185938A (en) | Two-frequency common antenna, multifrequency common antenna, and two-frequency and multifrequency common array antenna | |
| CA2444445A1 (en) | An integrated antenna for laptop applications | |
| KR20030082101A (en) | Multi band chip antenna with dual feeding port, and mobile communication apparatus using the same | |
| US20040021605A1 (en) | Multiband antenna for mobile devices | |
| US20030103015A1 (en) | Skeleton slot radiation element and multi-band patch antenna using the same | |
| US20050030232A1 (en) | Antenna assembly | |
| JP3114836B2 (en) | Printed dipole antenna | |
| KR101097950B1 (en) | A small antenna and a multiband antenna | |
| WO1996035241A1 (en) | Antenna unit | |
| KR101049724B1 (en) | Independently adjustable multi-band antenna with bends | |
| JP2001313516A (en) | Multi-frequency dipole antenna system | |
| US8199065B2 (en) | H-J antenna | |
| JPH09238019A (en) | Microstrip antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040909 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20050414 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20050606 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20051222 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060310 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060508 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060818 |
|
| A761 | Written withdrawal of application |
Free format text: JAPANESE INTERMEDIATE CODE: A761 Effective date: 20061005 |